This serum contains a high concentration of Vitamin C to support healthy skin. Set of 2. - Brand: Obagi - Product Name: Vitamin C Serum - Concentration: 20% - Volume: 15ml - Type: Serum Purchased around November 2025. New, unused item. Please refrain from purchasing if you are nervous or seeking perfection, as this item is stored at home by a private seller. ■ Please be sure to read the profile. ■ Basically, returns are not accepted. Please refrain from significant price reductions. ■ Immediate purchase OK Please note that we will prioritize the person who presses the purchase button first, even during comment exchanges. ■ We will ship with simple packaging. Depending on the product, it may be made compact. ■ Replies and shipping may be delayed depending on the day. ■ We are not responsible for any delivery issues (troubles, etc.) that may arise. ■ Please feel free to ask if you have any questions. Please understand that this is a private seller's item, and purchase with your understanding. Thank you for reading this long.